Are preprint servers like arXiv.org an effective way to publish?

I just read the following article from Physics Today called Commentary: On the quality and costs of science publication: https://physicstoday.scitation.org/doi/10.1063/PT.3.4259...

07 August 2019 1,727 3 View

What sort of accuracy is needed for estimation/measurement of ionospheric synthetic aperature radar (SAR) data?

When using models and/or measurements of the ionospheric Faraday rotation (FR), what sort of accuracy is needed for applications such as synthetic aperature radar (SAR) data/image correction?...

02 March 2018 2,748 0 View

Does the ambiguity in Faraday rotation measurements occur at 180 or 360 degrees?

01 February 2018 5,567 0 View

What is the role of the relaxation parameter in Kaczmarz method, aka algebraic reconstruction technique (ART)?

I would like to find a better explanation of the relaxation parameter used in the ART algorithm ( Kaczmarz method). "The ART method is affected by numerical uncertainties that are introduced by...

31 December 2017 9,689 0 View

Why do certain species of fish have two ranges of peak response to different wavelengths of light?

Most fish have a range of wavelengths which they respond to (e.g. see electroretinography studies by researchers at the Virginia Institute of Marine Science):...

04 May 2017 7,460 1 View

What is the BEST way to generate quiet day curves for riometer data?

There are several techniques for baselining riometer data. For example, CANOPUS (NORSTAR) Riometer quiet day curve generation is much more automated that what is available from some other...

02 March 2016 872 0 View

What are the boundaries of the ionosphere?

The Earth's ionosphere is a region of Earth's upper atmosphere between approximately 60-1000 km altitude, comprised of free electrons, different molecular ions and neutral particles, where the...

01 February 2016 3,141 5 View

Is anyone familiar with a figure that compares day and night side electron density profiles for the high latitude ionosphere?

Hello, I am looking for a figure (with reference) that is similar to the one attached (replyfig.png), which compares the day and night side ionospheric electron density profiles typical of...

01 February 2016 7,725 7 View

What is the best way to distribute/publish a dissertation?

Since completing my MSc (physics) I have been emailed by several questionable 'new' publishing companies such as Lambert Academic Publishers, Scientific and Academic Publishers, and Scientific and...

06 July 2014 3,688 6 View

What radio science journals are free of cost that have a high reputation and impact factor?

Hello, I have a research paper in preparation but am uncertain whether I will have enough funds available to publish in the journal that I usually publish in (Radio Science). The topic is...

01 January 1970 4,561 4 View

Physics: Why do we describe light by referring to its wavelength, but microwaves and radar pulses by referring to their frequency?

In physics, the description of the properties of light generally refers to its wavelength (nm), while in the range of microwaves and radio waves we refer to the frequency of a signal (e.g. kHz or...

03 March 2021 1,682 3 View

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 3 View

Looking for Materials with high thermal expansion coefficient and high temperature resistance?

03 March 2021 8,272 1 View

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 View

Anyone plz suggest relevant topic for research in image processing+Deep learning.?

I have selected brain tumor images ...but now found that already lots of research done n this topic.

03 March 2021 5,774 3 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 View

Chlorinated organic formation in odor control scrubbers using hypochlorite?

I'm involved in a study of odor control technologies for municipal wastewater treatment plant. One of the control options involves a chemical 2-stage (acid/alkaline) packed bed scrubber. The...

03 March 2021 3,661 2 View

1. What is the impact of having different scales in a survey? and how can we solve this problem before and after data collection (Literature)?

1. What is the impact of having different scales in a survey? and how can we solve this problem before and after data collection (Literature-based reflection)? Thank you for your time and for...

03 March 2021 2,870 3 View

What degree of missing data in a particular case/participant results in Expectation-Maximisation no longer working?

I'm dealing with a mediation model and am using the PROCESS module in SPSS. Due to SPSS and PROCESS being limited in the imputation methods - being unable to handle multiple imputation - the other...

02 March 2021 4,362 1 View